php - 如果购物车项目 = 0，则显示文本

Question

我在下面写的代码有问题。基本上，当购物车中有 x 件商品时，它会回显文本“您在购物车中有 x 件商品”。但是，当没有商品时，它应该回显“您在购物车中没有任何商品”，而是什么也不回显。我究竟做错了什么？

<?php 
    $array = unserialize($_SESSION['__vm']['vmcart']); 
    foreach($array->products as $product){
        $amount = $product->amount;
        if ($amount != 0){ echo "You have $amount item(s) in the cart."; } 
        else { echo "You don't have any items in the cart."; } 
    }
?>

Answer 1

这是因为代码没有出现在 for each 循环中。

<?php 
    $array = unserialize($_SESSION['__vm']['vmcart']); 
    if (count($array->products) > 0) {
      foreach($array->products as $product){
          $amount = $product->amount;
          echo "You have $amount item(s) in the cart."; 
          /* Do other thinks here. */
      }
    } else { 
     echo "You don't have any items in the cart."; 
    } 
?>

我不确定你为什么要使用循环顺便说一句。

Answer 2

删除你的 foreach 并使用它

if($size=sizeof($array->products))
echo "You have ".$size." item(s) in the cart.";
else
echo "You don't have any items in the cart.";